Nosir , I have not .

My '81 240D's water jacket was so bad , the chunks tore a HOLE in the water pump housing and it took me a LOT of Citric Acid flushing before it remained clean but that mild steel plug is indestructible unless you use a 12 point socket or open end wrench on it or other wise round it off .

As mentioned : you *might* need a short cheater handle on your 3/8" drive flex handle , I did the first time I took it out .

WHY are you keen to remove it ? .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better